Last Saturday I saw the drip drip of antifreeze under the back of my 87
Westy. Of course I thought "Heads". It wasn't. I looked under the license
plate and saw that the expansion tank was completely full. As in over the
top of the cap full. What's up? Right off the top of my head I think that
some compression gas is getting into the cooling system. Any input will be
appreciated. Thanks.

Marty